2017+ GM T87a TCM

Modified on Thu, 26 Oct 2023 at 08:53 AM

Due to increased OEM security, all GM 2017+ T87A TCMs need to be unlocked before they are able to be tuned.

You can Purchase a Modified T87A directly for $399.99.

or send one in to be unlocked through HP Tuners TCM Unlock Services – GM T87A for $199 - $299.

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